29 Jun 2017 What is the hashrate of AMD and Nvidia GPUs? while – which is why I have dedicated an Rx 480 8gb and my GTX 1080 to mine Siacoin exclusively, while my other rigs focus on dual mining Siacoin and Ethereum together (I am in it for the long haul, Rx 480 4gb, 660, 29th June 2017, £179.99, £0.2727.